51153335405 has 4 divisors (see below), whose sum is σ = 61384002492. Its totient is φ = 40922668320.

The previous prime is 51153335377. The next prime is 51153335417. The reversal of 51153335405 is 50453335115.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18002393929 + 33150941476 = 134173^2 + 182074^2 .

It is a de Polignac number, because none of the positive numbers 2^k-51153335405 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5115333536 + ... + 5115333545.

It is an arithmetic number, because the mean of its divisors is an integer number (15346000623).

Almost surely, 2^51153335405 is an apocalyptic number.

It is an amenable number.

51153335405 is a deficient number, since it is larger than the sum of its proper divisors (10230667087).

51153335405 is a wasteful number, since it uses less digits than its factorization.

51153335405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10230667086.

The product of its (nonzero) digits is 67500, while the sum is 35.

The spelling of 51153335405 in words is "fifty-one billion, one hundred fifty-three million, three hundred thirty-five thousand, four hundred five".